CENTRUM ROZVOJE STROJÍRENSKÉHO VÝZKUMU The acvity of the professional measuring workplace is focused on research in the field of measurement, analysis of noise and vibraon of machinery and equipment. The used measuring technology enables mulchannel measurements of dynamic variables and their evaluaon in the me and frequency domains in real me or in subsequent signal processing. Noise and vibraon measurements can be supplemented by measuring other physical quanes. Special acousc spaces are available for accurate measurements. Based on these measurements, measures to reduce noise and vibraons are proposed. When solving the problems, correlaon of noise and vibraons and their relaonship to the modal and dynamic properes of the system are being analyzed. MEASUREMENT AND ANALYSIS OF NOISE Sound pressure level measurements Sound intensity measurements Sound power measurements Measurements of material parameters (absorpon, sound insulaon) Noise frequency analysis (FFT, 1/n‐octave) Mapping of noise fields using microphone arrays (acousc holography, beam forming) Graphical display of the sound field around an object Idenficaon of the main noise sources, determinaon of paral acousc performances Cooperaon to reduce the noise of machinery MEASUREMENT AND ANALYSIS OF VIBRATIONS Measuring overall vibraon values Measurement of me histories and angular vibraon waveforms (dependence on rotaon of a mechanism, e.g. main sha of a machine) Frequency and order analysis Measurements of transients on a machine Measurements of the transmission and aenuaon characteriscs of oscillang systems Experimental modal analysis (Natural frequency, natural wave shapes, damping) Measurements of operaonal wave shapes (machine vibraon animaon in steady or transient state) Electromechanical excitaon of bodies and mechanisms using controlled vibrators Cooperaon in reducing the vibraon of machinery, design and implementaon of vibraon isolang elements Vibrodiagnoscs HALF ANECHOIC CHAMBER Internal dimensions 12 × 8,5 × 5,5 m Measurement of sound pressure levels from 20 dB(A) Measuring machines in a weight of up to 10 t Supply of technological media, flue gas exhaust ECHO CHAMBER Volume of 224 m3 Conforms to ISO 354 Measured sample in a weight of up to 1 t VISION UNLIMITED Tel.: +420 485 301 111, Fax: +420 485 302 402 E‐mail: [email protected], Web: www.vuts.cz VÚTS, a.s. Svárovská 619, Liberec XI‐Růžodol I, 460 01 Liberec CZECH REPUBLIC